1.	Simplify 1 Simplify the following expression: $$ \left(-1 - 1\right)\left(-3 + 2\right) - 2(-6)4 $$ Correct Answer $$ 50$$ or 50.0000

2.	Simplify 2 Simplify the following expression: $$ 2\times1(-5) - \left(3 + -3\right)\left(-3 + 5\right) $$ Correct Answer $$ -10$$ or -10.0000

3.	Fractions 1 Simplify the following expression: $$ \frac{5}{6} - \frac{3}{4} $$ Correct Answer $$ \frac{1}{12}$$ or 0.08333333333333337

4.	Fractions 2 Simplify the following expression: $$ \frac{\frac{4}{5}}{\frac{-4}{3}} $$ Correct Answer $$ \frac{-3}{5}$$ or -0.6000000000000001

5.	Significant figures 1. Write the following to 5 significant figures: 0.00020798145 Correct Answer 0.00020798 or $$2.0798\times10^{-4}$$ 2. Write the following to 3 significant figures: 1335.7328 Correct Answer 1340 or $$1.34\times10^{3}$$

6.	Standard Form 1. Write the following in standard form to 4 significant digits: 7719.34 Correct Answer $$7.719\times10^{3}$$ 2. Write the following in standard form to 3 significant digits: 4144.27 Correct Answer $$4.14\times10^{3}$$

7.	Significant figures 1. Write the following in preferred standard form to 3 significant digits: 0.0000002964 Correct Answer $$296\times10^{-9}$$ 2. Write the following in preferred standard form to 5 significant digits: 1.22041 Correct Answer $$1.2204\times10^{0}$$

8.	Simplify 2 Simplify the following expression: $$ 1 - 3 + \frac{2}{4} - {\left(\frac{-3}{4}\right)}^{2} $$ Correct Answer $$ \frac{-33}{16}$$ or -2.06250

9.	Simplify 1 Simplify the following expression: $$ \left(5\times6 + -1 - -2\right)2(-3)(-2) $$ Correct Answer $$ 372$$ or 372.000

10.	Simplify 2 Simplify the following expression: $$ \frac{4 + 3}{-2 + 3}2\frac{-5}{3} $$ Correct Answer $$ \frac{-70}{3}$$ or -23.3333